Dealer (Drug Dealer)
Someone who makes a profit from buying Large Quantities of drugs from a producer
at a lower price, and sells at a moderate price.

Ganja Farmer Sells Pounds/Ounces to a dealer
The Dealer Might sell off To a middleman at a discounted price (buying large quantities)
The Middle Man sells to the consumer who pays moderate price.
Being a Dealer and having a middleman can keep you off the streets and being good friends can make transactions easy.